2009 Audi RS4 vs. 2005 Mercedes-Benz S
To start off, 2009 Audi RS4 is newer by 4 year(s). Which means there will be less support and parts availability for 2005 Mercedes-Benz S. In addition, the cost of maintenance, including insurance, on 2005 Mercedes-Benz S would be higher. At 5,506 cc (12 cylinders), 2005 Mercedes-Benz S is equipped with a bigger engine. In terms of performance, 2005 Mercedes-Benz S (493 HP @ 4200 RPM) has 79 more horse power than 2009 Audi RS4. (414 HP @ 7800 RPM) In normal driving conditions, 2005 Mercedes-Benz S should accelerate faster than 2009 Audi RS4. With that said, vehicle weight also plays an important factor in acceleration. 2005 Mercedes-Benz S weights approximately 441 kg more than 2009 Audi RS4. So despite on having greater horse power, its additional weight may have an impact towards its acceleration in comparison.
Because 2009 Audi RS4 is four wheel drive (4WD), it will have significant more traction and grip than 2005 Mercedes-Benz S. In wet, icy, snow, or gravel driving conditions, 2009 Audi RS4 will offer significantly more control. With that said, do keep in mind that many other factors such as speed and the wear on your tires can also have significant impact on traction and control. Let's talk about torque, 2005 Mercedes-Benz S (801 Nm) has 371 more torque (in Nm) than 2009 Audi RS4. (430 Nm). This means 2005 Mercedes-Benz S will have an easier job in driving up hills or pulling heavy equipment than 2009 Audi RS4.
Compare all specifications:
| 2009 Audi RS4 | 2005 Mercedes-Benz S | |
| Make | Audi | Mercedes-Benz |
| Model | RS4 | S |
| Year Released | 2009 | 2005 |
| Body Type | Sedan | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4163 cc | 5506 cc |
| Engine Cylinders | 8 cylinders | 12 cylinders |
| Engine Type | V | V |
| Valves per Cylinder | 4 valves | 3 valves |
| Horse Power | 414 HP | 493 HP |
| Engine RPM | 7800 RPM | 4200 RPM |
| Torque | 430 Nm | 801 Nm |
| Engine Bore Size | 84.5 mm | 82 mm |
| Engine Stroke Size | 92.8 mm | 87 mm |
| Drive Type | 4WD | Rear |
| Number of Seats | 5 seats | 5 seats |
| Number of Doors | 4 doors | 4 doors |
| Vehicle Weight | 1650 kg | 2091 kg |
| Vehicle Length | 4590 mm | 5170 mm |
| Vehicle Width | 1820 mm | 1860 mm |
| Vehicle Height | 1420 mm | 1460 mm |
| Wheelbase Size | 2660 mm | 3210 mm |
| Fuel Consumption Overall | 13.6 L/100km | 15.7 L/100km |
| Fuel Tank Capacity | 63 L | 88 L |
